CN105109158B - There is the flexible bottom of strengthening course - Google Patents

There is the flexible bottom of strengthening course Download PDF

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Publication number
CN105109158B
CN105109158B CN201510420020.9A CN201510420020A CN105109158B CN 105109158 B CN105109158 B CN 105109158B CN 201510420020 A CN201510420020 A CN 201510420020A CN 105109158 B CN105109158 B CN 105109158B
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CN
China
Prior art keywords
flexible bottom
strengthening course
layer
ontology
protective layer
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Active
Application number
CN201510420020.9A
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Chinese (zh)
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CN105109158A (en
Inventor
邢春鹏
赵衡柱
王华吉
吴新跃
刘懿敏
王岗罡
栾铮
王小军
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China Academy of Launch Vehicle Technology CALT
Beijing Institute of Space Launch Technology
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China Academy of Launch Vehicle Technology CALT
Beijing Institute of Space Launch Technology
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Priority to CN201510420020.9A priority Critical patent/CN105109158B/en
Publication of CN105109158A publication Critical patent/CN105109158A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/18—Layered products comprising a layer of natural or synthetic rubber comprising butyl or halobutyl rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance

Abstract

The present invention relates to flexible bottom technologies in pop-up device, in particular to the flexible bottom with strengthening course.It is followed successively by strengthening course, protective layer outward from the inner surface of the ontology of flexible bottom；Strengthening course is the hard felt composite material layer of porous type carbon carbon；Protective layer includes：It is followed successively by interior protective layer, shielded layer, external protection coating from inside to outside；Interior protective layer, external protection coating are aramid/fire-retardant neoprene composite layer.Present invention bonding and reinforcing layer on the inner surface of flexible bottom ontology can improve the rigidity of pedestal, and strengthening course uses the hard felt composite material of carbon carbon, and the material is light, rigidity is high；Strengthening course is protected using protective layer outside strengthening course, which is aramid/fire-retardant neoprene composite material, has fire-retardant scour resistance.

Description

There is the flexible bottom of strengthening course
Technical field
The present invention relates to flexible bottom technologies in pop-up device, in particular to the flexible bottom with strengthening course.
Background technology
Flexible bottom is the key equipment of pop-up device, is installed on launching tube rear portion, is used for gas pressure in launching tube Recoil load transmission under force effect reduces the influence to car launcher to ground.In order to adapt to different road surfaces height, uneven Operating mode pass through itself flexible large deformation and ground under internal pressure effect with ground there are certain gap after flexible bottom installation Face contacts, and load is effectively transmitted.Since it is generally using flexible material, how curved structure design, the rigidity of pedestal bottom surface Poor, especially when pedestal is when being relatively large in diameter, easy generated with ground contacts, wears in use, and meeting is used for a long time Its carrying, sealing performance is influenced, and also reduces its road surface adaptability.
Invention content
The purpose of the present invention is to provide a kind of flexible bottoms with strengthening course, to solve the wear problem of pedestal.
An embodiment of the present invention provides a kind of flexible bottoms with strengthening course, from the interior table of the ontology of the flexible bottom It faces out and is followed successively by strengthening course, protective layer；The strengthening course is the hard felt composite material layer of porous type carbon carbon；The protective layer packet It includes：It is followed successively by interior protective layer, shielded layer, external protection coating from inside to outside；The interior protective layer, the external protection coating be aramid fiber/ Flame-retardant chloroprene rubber composite layer.
In some embodiments, preferably, it is used between the inner surface of the ontology of the strengthening course and the flexible bottom Neoprene liquid is bonded.
In some embodiments, preferably, the interior protective layer is pasted on the strengthening course, covers the strengthening course and prolongs Extend to the inner surface of the ontology of the flexible bottom.
In some embodiments, preferably, the preparation method of the hard felt composite material layer of the carbon carbon is：Prepare 2.5D braidings Carbon fiber Nomex；The carbon fiber Nomex is immersed into resin, obtains mixture；By the mixture at 500-560 DEG C It is sintered.
In some embodiments, preferably, the mass ratio of the carbon fiber Nomex and the resin is 7:3, the carbon The carbonation rate of the hard felt composite material layer of carbon is more than 90%.
In some embodiments, preferably, the preparation method of the aramid/fire-retardant neoprene composite layer is：It takes The aramid fiber layer of preset thickness；In the flame-retardant chloroprene rubber liquid of the two sides brushing design thickness of the aramid fiber layer.
In some embodiments, preferably, the thickness of the aramid fiber layer is 0.4-0.6 millimeters；And/or the resistance The brushing thickness for firing neoprene liquid is 0.04-0.06 millimeters.
In some embodiments, preferably, the both ends of the flexible bottom are connected with flange, the flange and the flexibility Base body integrated vulcanizing bonds.
In some embodiments, preferably, the flange includes：Flanged plate and swivel nut；The middle part of the flanged plate is arranged Stepped groove；The stepped structure of swivel nut is caught in the stepped groove, and middle part is threaded hole.
In some embodiments, preferably, the top of the flexible bottom ontology is equipped with launching tube connecting flange installation position；
It is also equipped with guide pin, the flexible bottom ontology is used for and the launching tube connecting flange connects in the launching tube Acting flange installation position is oriented to docking；
It is also equipped with fastener, is used to the launching tube connecting flange and the flexible bottom ontology being fastenedly connected.
Flexible bottom provided in an embodiment of the present invention with strengthening course, compared with prior art, in flexible bottom ontology Inner surface on bonding and reinforcing layer, the rigidity of pedestal can be improved, and strengthening course uses the hard felt composite material of carbon carbon, the material matter Gently, rigidity is high；Strengthening course is protected using protective layer outside strengthening course, the protective layer is multiple for aramid/fire-retardant neoprene Condensation material has fire-retardant scour resistance.
Description of the drawings
Fig. 1 is flexible bottom overall structure schematic top plan view in one embodiment of the invention；
Fig. 2 is flexible bottom schematic cross-section in one embodiment of the invention；
Fig. 3 is after the present invention is connect with launching tube, and the section of one fastener link position of flexible bottom ontology shows in Fig. 2 It is intended to；
Fig. 4 is the guide pin installation section signal in Fig. 2 on the right of flexible bottom ontology before the present invention is connect with launching tube Figure.
Note：The inner surface of 1 flexible bottom ontology；2 strengthening courses；3 protective layers；Protective layer in 31；32 external protection coatings；33 shieldings Layer；4 flanges；41 flanged plates；42 swivel nuts；5 fasteners；6 guide pins；7 launching tube connecting flanges.
Specific implementation mode
The present invention is described in further detail below by specific embodiment combination attached drawing.
In view of current flexible bottom generally uses flexible material, how curved structure design, the rigidity of pedestal bottom surface compared with Difference, especially when pedestal is when being relatively large in diameter, easy generated with ground contacts, wears in use, and being used for a long time can shadow Its carrying, sealing performance is rung, and the problem of also reduce its road surface adaptability, the present embodiment provides a kind of lightweights, high-strength The flexible bottom with strengthening course of degree, fire-retardant antiscour.
This carries the flexible bottom of strengthening course, is followed successively by strengthening course outward from the inner surface of the ontology of flexible bottom, prevents Sheath；Strengthening course is the hard felt composite material layer of porous type carbon carbon；Protective layer includes：It is followed successively by interior protective layer, shielding from inside to outside Layer, external protection coating；Interior protective layer, external protection coating are aramid/fire-retardant neoprene composite layer.
The bonding and reinforcing layer on the inner surface of flexible bottom ontology can improve the rigidity of pedestal, and strengthening course uses carbon The hard felt composite material of carbon, the material is light, rigidity is high；Strengthening course is protected using protective layer outside strengthening course, the protection Layer is aramid/fire-retardant neoprene composite material, has fire-retardant scour resistance.
Next, the flexible bottom for carrying strengthening course is described in detail by some specific embodiments：
A kind of flexible bottom with strengthening course, such as Fig. 1, shown in 2, ontology 1 is fabricated from a flexible material, in order to increase it Rigidity is followed successively by strengthening course 2, protective layer 3 outward from the inner surface of the ontology 1 of flexible bottom；Pasted on 1 inner surface of ontology Strengthening course 2, then apply protective layer 3 on strengthening course 2.Wherein, strengthening course 2 is the hard felt composite material layer of porous type carbon carbon, this Material is porous structure, therefore, lighter weight under same volume, and and carbonation rate (i.e. carbon content rate) is more than 90%, therefore, rigidity is non- Chang great can increase the bottom rigidity of flexible bottom.And protective layer 3 applies protection to strengthening course 2, realizes the effect of fire-retardant antiscour Fruit.The protective layer 3 has multilayer composition again, is followed successively by interior protective layer 31, shielded layer 33, external protection coating 32 from inside to outside；Interior protection Layer 31, external protection coating 32 are aramid/fire-retardant neoprene composite layer, and aramid fiber is high-strength material, and neoprene is excellent Elegant fire proofing.And shielded layer 33 is arranged between inside and outside two layers of protective layer, realizes protection antiscour.
In order to improve the bonding strength between 1 inner surface of strengthening course 2 and ontology, the ontology 1 of strengthening course 2 and flexible bottom It is bonded using neoprene liquid between inner surface, on the other hand, neoprene liquid has flame retardant effect.
Interior protective layer 31 is pasted on strengthening course 2, covers strengthening course 2 and extends to the inner surface of the ontology 1 of flexible bottom.So It is bonded shielded layer 33 afterwards, is finally bonded external protection coating 32.
The hard felt composite material layer of carbon carbon is a kind of heat safe material layer of the high carbonation rate of porous type, and preparation method is：
Prepare the carbon fiber Nomex of 2.5D braidings；It, will i.e. using the carbon fiber entirety Nomex of 2.5D braidings as raw material This carbon fiber Nomex immerses resin, obtains mixture；Then mixture is sintered at 500-560 DEG C.
In above-mentioned preparation process, the mass ratio of carbon fiber Nomex and resin is 7:3, the carbon carbon obtained after high temperature sintering is hard The carbonation rate (carbon content rate) of felt composite material layer is more than 90%.Light, high intensity.
Aramid/fire-retardant neoprene composite layer has high intensity, flame-retarding characteristic, and preparation method is：
The aramid fiber layer for taking preset thickness is brushed that is, using aramid fiber layer as raw material on the two sides of aramid fiber layer The flame-retardant chloroprene rubber liquid of design thickness.
In above-mentioned preparation process, the thickness of aramid fiber layer is 0.4-0.6 millimeters；The brushing of flame-retardant chloroprene rubber liquid is thick Degree is 0.04-0.06 millimeters.Such as 0.5 millimeter of aramid fiber layer, 0.05 millimeter of flame-retardant chloroprene rubber liquid is brushed, is obtained 0.6 millimeter of aramid/fire-retardant neoprene composite layer.
In order to improve the quick connection of flexible bottom and launching tube, designed as follows：The both ends of flexible bottom are connected with Flange 4, flange 4 are bonded with 1 integrated vulcanizing of flexible bottom ontology.
Above-mentioned flange 4 includes：Flanged plate 41 and swivel nut 42；The stepped groove of middle part setting of flanged plate 41；Swivel nut 42 Stepped structure is caught in stepped groove, and middle part is threaded hole.Swivel nut 42 and flanged plate 41 are installed in advance, then Integrated vulcanizing bonding is carried out with flexible bottom ontology 1, to reduce assembly complexity.
The top of flexible bottom ontology 1 is equipped with 4 installation position of launching tube connecting flange；It, directly will transmitting when connection Cylinder connecting flange 4 is as the installation position.
Such as Fig. 3, shown in 4, for convenience, quick that launching tube is fallen into installation position, flexible bottom is also equipped with guide pin 6, Flexible bottom is docked by guide pin 6 with the guiding of launching tube connecting flange 7.Since flexible bottom is also equipped with fastener 5, it is being oriented to It after docking, is connect with swivel nut 42 by fastener 5 after removing guide pin 6, realizes the quick connection with launching tube connecting flange 7.
The flexible bottom prepared by this method has high rigidity performance, and fire-retardant scour resistance is strong, furthermore, it is possible to transmitting Cylinder quickly connection.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (8)

1. a kind of flexible bottom with strengthening course, which is characterized in that from the inner surface of the ontology of the flexible bottom outward according to Secondary is strengthening course, protective layer；The strengthening course is the hard felt composite material layer of porous type carbon carbon；The protective layer includes：From introversion It is followed successively by interior protective layer, shielded layer, external protection coating outside；The interior protective layer, the external protection coating are aramid/fire-retardant neoprene rubber Glue composite layer；The hard felt composite material of carbon carbon is immersed resin by carbon fiber Nomex and is burnt through 500~560 DEG C of high temperature Knot is formed, and carbonation rate is more than 90%, wherein the mass ratio of carbon fiber Nomex and resin is 7:3.
2. carrying the flexible bottom of strengthening course as described in claim 1, which is characterized in that the strengthening course and the flexible bottom It is bonded using neoprene liquid between the inner surface of the ontology of seat.
3. carrying the flexible bottom of strengthening course as described in claim 1, which is characterized in that the interior protective layer is pasted on described Strengthening course covers the strengthening course and extends to the inner surface of the ontology of the flexible bottom.
4. carrying the flexible bottom of strengthening course as described in claim 1, which is characterized in that the aramid/fire-retardant neoprene The preparation method of composite layer is：
Take the aramid fiber layer of preset thickness；
In the flame-retardant chloroprene rubber liquid of the two sides brushing design thickness of the aramid fiber layer.
5. carrying the flexible bottom of strengthening course as claimed in claim 4, which is characterized in that the thickness of the aramid fiber layer is 0.4-0.6 millimeters；And/or the brushing thickness of the flame-retardant chloroprene rubber liquid is 0.04-0.06 millimeters.
6. the flexible bottom as described in any one in claim 1-5 with strengthening course, which is characterized in that the flexible bottom Both ends are connected with flange, and the flange is bonded with the flexible bottom ontology integrated vulcanizing.
7. carrying the flexible bottom of strengthening course as claimed in claim 6, which is characterized in that the flange includes：Flanged plate and Swivel nut；The stepped groove of middle part setting of the flanged plate；The stepped structure of swivel nut is caught in the stepped groove Interior, middle part is threaded hole.
8. carrying the flexible bottom of strengthening course as claimed in claim 7, which is characterized in that
The top of the flexible bottom ontology is equipped with launching tube connecting flange installation position；
It is also equipped with guide pin, is used for the flexible bottom ontology and the launching tube connecting flange in the launching tube connection method Blue installation position is oriented to docking；
It is also equipped with fastener, is used to the launching tube connecting flange and the flexible bottom ontology being fastenedly connected.
CN201510420020.9A 2015-07-16 2015-07-16 There is the flexible bottom of strengthening course Active CN105109158B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN105109158B true CN105109158B (en) 2018-08-21

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Publication number Priority date Publication date Assignee Title
CN107525436B (en) * 2017-08-28 2019-08-30 北京航天发射技术研究所 A kind of flexible bottom preventing ejection aftereffect resorption

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